Ok, here's the dope:Code:`0 rate=9%=u% 1000.00=a`

k rate=12%=v%

11=n 3000.00=b

1000 bucks deposited in savings account at year 0, at 9% compounded annually.

12% compounded annually will later be the rate, effective at a time k which will

result in a future value of 3000 bucks after 11 years.

For this to happen, k = 5.451118.....

If opening rate = u and opening deposit = a,

second rate = v , future value = b and number of years = n,

(v > u, b > a(1+u)^n)

what is k in terms of a,b,n,u,v?